Your division is considering two investment projects, each of which requires an up-front expenditure of $28 million. You estimate that the cost of capital is 9% and that the investments will produce the following after-tax cash flows (In milllons of dollars): Year Project A Project B 20 10 15 20 10 4 6 a. What is the regular payback period for each of the projects? Round your answers to two decimal places. Project A years Project E years b. What is the discounted payback perlod for each of the projects? Round your answers to two decimal places Project A years Project B years